What size should a condensate pipe be?
Table of Contents
What size should a condensate pipe be?
Any external boiler condensate pipe must be a minimum internal diameter (ID) of 30mm, and insulated, using suitable waterproof and weatherproof insulation. Any internal condensate pipe should be a minimum of 19mm ID and upsized to 30mm ID minimum before passing through the building structure to outside.
How do you size a condensate drain pipe?
1 Condensate disposal. 314.2. 2 Drain pipe materials and sizes….Resources.
| Equipment Capacity | Minimum Condensate Pipe Diameter |
|---|---|
| Up to 20 tons of refrigeration | 3/4 inch |
| Over 20 tons to 40 tons of refrigeration | 1 inch |
| Over 40 tons to 90 tons of refrigeration | 1 1/4 inch |
| Over 90 tons to 125 tons of refrigeration | 1 1/2 inch |
What is nominal thickness of pipe?
The term nominal refers to pipe in non-specific terms and identifies the inside diameter with a non-dimensional number. For example, a 2-inch nominal steel pipe consists of a family of steel pipe with a 2.375″ diameter. Pipe also has a wall thickness which is referred to by its schedule.
Can a condensate pipe be copper?
The condensate pipe must be plastic – usually solvent-weld fittings – and at least 22 mm in diameter. Copper or steel pipework cannot be used. This is because, at a pH of 3-4, the condensate is slightly acidic and would corrode it. Condensate pipes may run outside or through unheated buildings, such as garages.
What is condensate pipe made of?
The condensate pipe is usually a white PVC-U pipe, similar to one you may find on a washing machine or sink waste pipe which usually goes outside into a drain. It’s worth noting that boiler condensate can be slightly corrosive to certain materials, especially metals.
What size PVC is used for AC drain line?
¾-1 inch
Determine what size PVC piping you have (it will usually say on the pipe, most common size is ¾-1 inch), measure how much rubatex you need and cut a line going down the rubatex.
Can a condensate trap be too big?
If the trap outlet is too tall (Figure 1C), negative pressure will prevent drainage, causing the condensate to back up into the system resulting in property and equipment damage.
How do I calculate pipe thickness?
t = P * D / (2 * F *S * E)
- t : Calculated Wall thickness (mm)
- P : Design pressure for the pipeline (kPa)=78 bar-g=7800 KPa.
- D : Outside diameter of pipe (mm)= 273.05 mm.
- F : Design factor = 0.72.
- S : Specified Minimum Yield Strength (MPa)=359870 KPa for the specified material.
- E : Longitudinal joint factor = 1.0.
Does condensate corrode copper?
Condensate formed from combustion gas is extremely acidic and therefore very corrosive. It can eat through copper piping in a matter of months and through cast iron drains in just a year or so.
Can you run a condensate pipe into a waste pipe?
Yes, a condensate pipe can be routed into a waste pipe. This is best done after the trap on the waste pipe in case of blockages.
Can you run a condensate pipe into a gutter?
“Only if it there is a combined drainage system, if not you will be running the condensate into the surface water sewer as opposed to the foul water sewer. The kitchen waste should not be going into surface either so check you have a combined system.”
Can you use copper for condensate?
Everyone knows that copper tube has a proven history in use in a variety of applications, however a common question is “can I use copper tube in a steam system?” Just like in water systems, copper tube has long been used in both steam and steam condensate piping systems.
What is code for AC drain line?
IMC 307.2. 2 tells us that an A/C condensate drain inside diameter should not be smaller than 3/4″ and should not be smaller than the drain pan outlet diameter. According to the IMC, 3/4″ is sufficient for up to 20 tons unless the drain outlet size is larger than 3/4″.
Do I need a trap in my condensate line?
All condensate drains go into a trap. Since the drain taps into the exhaust system, leaving it open to the air would allow for a potential exhaust/flue gas leak in the living space, which is a big no-no.
What size PVC pipe is used for AC drain?
Determine what size PVC piping you have (it will usually say on the pipe, most common size is ¾-1 inch), measure how much rubatex you need and cut a line going down the rubatex.
